One mistake people do is that they forget that finally, a home is one single unit and all the rooms are its components. They design each room differently, which ultimately becomes a mish-mash of ideas, unable to tell the story of the family. Instead, a well-coordinated theme can bring a kind of coherence to the entire house.
Hence, while designing the kitchen, think of the entire house. Does the rest of the house have Victorian design furniture? Then having a modern kitchen design in the kitchen will look misplaced. Try and match it up with a classic look, to have a suitable transition. Alternatively, if the other rooms are themed in white and beige, try adding some dark colours in your kitchen, to make it stand out.